Sheet-metal box.



I. PRROLY.

SHEET METAL BOX.

APPLICATION FILED mAn.a1. 1917.

1 38, 86 Patented Aug. 28, 1917.

2 SHEETS-SHEET I.

l. PAROLY.

SHEET METAL BOX.

APPLICATION FILED MAR. at. 19H.

7 Patented Aug. 28, 1917'.

2 SHEETSSHEET 2.

mum/r01? $1.44 24M? l1 TTOR/VEY UNITE STATES @FFIQE.

ISIDOR PABOLY, OF NEW YORK, N. Y., ASSIGNOR T MYER KAMENSTEIN, OFBROOKLYN, NEW YORK.

SHEET-METAL BOX.

Specification of Letters Patent.

Patented Aug. 28, 1917.

To all whom it may concern:

Be it known that I, IsIDoR PAROLY, a citizen of Austria, and a residentof New York city, in the county of Bronx and State of New York, haveinvented certain new and useful Improvements in Sheet-Metal Boxes, ofwhich the following is a Specification.

This invention relates to a sheet metal box of novel construction, whichpossesses great strength, may be readily assembled, and 1s not dependentupon the use of solder for holding its component partstogether.

In the accompanying drawing:

Figure 1, is a perspective view of the box reversed, showing itdismembered, and with the bottom removed;

Fig. 2, a similar view with the bottom 1nserted;

Fig. 3, a plan of the lower corner shown in Fig. l; t

Fig. 1, a section on line Fig. 2;

Fig. 5, a vertical longltudinal section through the center of the box,and

Fig. 6 a perspective view of the box complete.

The body of the sheet metal box is composed of a pair of side plates 1,a pair of end plates 2, and a bottom 3. Each side plate 1, is providednear its upper edge with a hor1- zontal bead 4 that extends along thetop of the box, and at each of its ends with an upright flange 5 thatextends from the lower end of the plate up to the bead. Plate 1 isfurther provided at its lower edge with a horizontal flange 6, whichhowever, stops a distance short of both ends of the plate,-so that aclearance 7 is formed between flange 6 and each of the flanges 5.

In like manner, each end plate 2, is provided with an upper horizontalbead 8, a

pair of upright flanges 9, and a lower norizontal flange 10, withclearances 11, between flanges 9 and 10.

The bottom 3 is provided with a pair of longitudinal flanges 12, and apair of end flanges 13, which are spaced from the long1- tudinal flangesas at 14.

For connecting the side plates 1 to the end plates 2, at each of the boxcorners, Iemploy four sheet metal strips bent axially at right anglesand having inwardly turned upright flanges 16, which are adapted tounterlock with flanges 5 and 9, the length of each angle strip 15, beingsuch that it extends from bottom 3 up to beads 4, 8.

For connecting the side plates 1 to the bottom 3, I employ a pair oflongitudinal horizontal sheet metal angle strips 17, having beveled ends18, and inwardly turned flanges 19. For connecting end plates 2 tobottom 3, I employ a pair of transverse horizontal sheet metal anglestrips 20, having beveled ends 21 and inwardly turned flanges 22.

In assembling theparts, the slightly spread angle strips 15 are slippedfrom the bottom upward through clearances 7, 11 over the flanges 5 and 9of a pair of adjoining plates'l and 2, until they abut against beads 4,8 and then the corners are flattened over a horn, so that the flangeswill interlock. The beads 1 and 8 extend to the corners of the box wherethey meet, to here overlie and conceal the upper edges of the cornerstrips 15 which abut against thelower sides of the beads. Thelongitudinal strips 17 are next slipped through clearances 7, 14:, overabutting flanges 6, 12 of side plates 1 and bottom 3, and are flatteneddown in like manner. Finally the transverse strips are slipped throughclearances 11, 14 over abutting flanges 10, 13 of end plates 2 andbottom 3, and are flattened down, which completes the operation. Ifdesired, the beveled edges of strips 17 20 which by the operationdescribed overlie upright strips 15, may be soldered to the latter. Thissoldering however, does not contribute to the selfsustaining characterof the box, but serves to eliminate raw edges and to insure a neatfinish.

The cover of the box is composed of a flanged top plate 23 and'of aflanged rim 2 1, which is connected to the top'by a pair of flangedlongitudinal angle strips 25, and a pair of flanged transverse anglestrips 26, substantially in the same manner as the bottom 3 is connectedto the sides and ends of the box body.

It will be seen that a sheet metal box constructed as described,possesses great strength, especially at the reinforced corners, that itmay be assembled and is held together without soldering, and that owingto the absence of sustaining solder it will not be apt to fall apartwhen subjected to excessive heat. The box is therefore well adapted forholding cash, bonds, and other valuables which should be protected in asafe and fire proof manner.

I claim: I horizontal angle strips that connect the side A sheet metalbox comprising a pair of plates and the end plates to the bottom, and

side plates and a air of end plates, said side a plurality of uprightangle strips that abut 10 I plates and end p ates having lowerhorizonagainst said horizontal upper beads, and a 5 tal flanges, uprightend flanges and horiconnect the side plates to the end plates.

zontal upper beads that extend along the top of the box, a flangedbottom, a plurality of ISIDOR PAROLY.

